core: create hand eval module

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create classes 'Card' and 'Hand'

Card
- rank (2,3,...,J,Q,K,A)
- suit (spades, clubs, etc.)
- string representation ("ace of clubs", "Ac")

Hand
- add card to hand
- find best hand (no worst hand finder yet for "low" games)
- compare two hands
- string representation ("full house (aces over tens)")

Original issue reported on code.google.com by brian%br...@gtempaccount.com on 18 Jan 2008 at 4:30